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Northern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 19 January 2026

Tonight and Tuesday.

Wind northwest 30 knots diminishing to northwest 15 near midnight then increasing to southwest 25 near noon Tuesday.

Scattered flurries. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending near midnight. Freezing spray beginning Tuesday afternoon.

Waves

Issued 06:30 PM EST 19 January 2026
Tonight and Tuesday. Over open water waves 2 metres subsiding to 0.5 to 1 late overnight then building to 2 Tuesday afternoon.

Extended Forecast

Issued 06:30 PM EST 19 January 2026
Wednesday Wind southwest 25 knots.
Thursday Wind west 25 knots.
Friday Wind west 20 knots increasing to northwest 30 late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Freezing spray warning in effect

Northern Georgian Bay

Issued 6:30 PM EST 19 January 2026

Moderate or severe freezing spray is occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 19 January 2026 Tonight and Tuesday At 6:30 p.m. EST tonight low 1000 mb located over central Quebec.
By 6:30 p.m. EST Tuesday departing low 995 mb located over eastern
Labrador.

At 6:30 p.m. EST tonight ridge located from Missouri to
Saskatchewan.
By 6:30 p.m. EST Tuesday high 1037 mb located over West Virginia.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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